April Fool's Day in Japan

Today, April 1st, is April Fool's Day. If you were wondering if it is a thing in Japan - I can tell you that it is. In Japanese it is written エイプリルフール (without "day" の日). 

It is recognized in Japan much like in many other countries, but the tone tends to be gentler, more playful, and often surprisingly creative. The general “rule” people follow is that lies should be harmless, light, and ideally revealed by noon — a custom borrowed from Western traditions but loosely applied.

What makes Japan’s April Fools’ unique is that sometimes even companies participate. I didn't see any myself this year as I was out all day, but in the past, I've seen major companies, even local governments release elaborate joke announcements. Have you seen any this year?